Near Champagne in the village of Tonnerre, just East of Chablis, the average vine age here is 25 yrs old which are grown on clay and limestone soil. The grapes for the Sparkling are harvested between one and two weeks before the Bourgogne in order to preserve the acidity necessary to make a balanced sparkling wine. The wine remains on the lees in bottle for a minimum of 13 months before being disgorged and no dosage is added.